Negazione di "tutti", "nessuno" e "qualcuno"

What's the correct negation of "All children are lively"? Let's find out together in this video created for the teachers' competition, but also suitable for anyone curious to delve deeper into logic. ❤️ Donate one euro: https://paypal.me/quimatematica/1 💖 Subscribe to the channel:    / @quimatematica   💖 Patreon Page:   / quimatematica   💎 Facebook Page:   / qui.matematica   💌 Email: [email protected] 📃 Text and editing by Claudio Signorini: https://www.claudiosignorini.com 📹 Recording and thumbnails by Maria Signorini 🎸 Logo and theme song by Luca Francioso: https://www.lucafrancioso.com